sftp-server: Add nanoseconds support

[Stuart Henderson]

On 2021/09/03 15:56, Opty wrote:
> Hello,
> 
> please, consider adding nanoseconds support to sftp-server.
> 
> BTW, the AIMS archive
> (http://marc.theaimsgroup.com/?l=openssh-unix-dev&r=1&w=2) seems
> broken (empty page).

marc moved to a separate domain some time ago, the link on
https://www.openssh.com/list.html is correct:

https://marc.info/?l=openssh-unix-dev&r=1&w=2